In this section, two-point and three-point correlation functions are
analyzed respectively. The condensate parameters are taken at \(\mu =1\) 
GeV as [1]}: \(\langle \bar{q}q\rangle =-(0.24\pm 0.01\ {\rm GeV})^{3}\) ,
\(\langle \bar{q}q\rangle =(0.8\pm 0.2)\langle \bar{q}q\rangle \) , \(\langle \bar{q}g_{s}\sigma Gq\rangle =m_{0}^{2}\langle \bar{q}q\rangle \) ,
\(\langle \bar{s}g_{s}\sigma Gs\rangle =m_{0}^{2}\langle \bar{s}s\rangle \) 
and \(m_{0}^{2}=(0.8\pm 0.2)\ {\rm GeV}^{2}\) . \(\overline{{\rm MS}}\) 
masses are used for quarks unless otherwise stated [2]}:
\(& m_{c}(m_{c})=1.27\pm 0.02\ {\rm GeV},\quad m_{s}(m_{c})=0.103\pm 0.012\ {\rm GeV},\nonumber \\& m_{s}(1\ {\rm GeV})=0.110\pm 0.013\ {\rm GeV}.\) 
